Question

question 1 (1 point) calcium is stored in the __ of muscle cells, and it is released only when an action potential has reached the __. question 2 (1 point) which of the following is not one of the ways a muscle fiber can make atp? lactic acid fermentation cori cycle glycolysis creatine phosphate

Explanation:

Question 1: Calcium is stored in the sarcoplasmic reticulum of muscle cells and released upon an action potential. Axon terminals are part of neurons and t - tubules are involved in the propagation of the action potential in muscle cells but not calcium storage. Troponin - tropomyosin complex is related to the regulation of muscle contraction by calcium binding, not calcium storage.
Question 2: The Cori cycle is not a direct way a muscle fiber makes ATP. Creatine phosphate can rapidly donate a phosphate group to ADP to form ATP. Glycolysis can produce ATP anaerobically. Lactic acid fermentation is a by - product of glycolysis in anaerobic conditions in muscle cells and is related to ATP production. The Cori cycle is about the conversion of lactate to glucose in the liver and its return to muscle, not an ATP - making process in muscle fibers.

Answer:

Question 1: sarcoplasmic reticulum
Question 2: Cori cycle